NOCO GENIUS2D 2A 12V Smart Onboard Battery Charger - Direct-Mount Automatic Maintainer Trickle Charger Desulfator with Overcharge Protection

The media could not be loaded. I installed the NOCO GENIUS2D on my RAV4 after relocating my AGM Yellowtop battery to the rear. It bolted on easily using low-profile M8x1.25 10mm flat head screws, and while I haven’t permanently mounted it yet, it’s already working flawlessly. The charger maintains and tops off the battery just as shown in my video. I like that it’s fully automatic—no settings to fuss with—and the temperature compensation feature gives peace of mind for long-term use. Compact, efficient, and a solid solution for anyone running an auxiliary or relocated battery setup. Read more

Smaller than I expected but much easier to install because of its size. The mounting strap has two holes to install the plastic snap-on back to the metal of the vehicle inside the engine compartment using two self-tapping screws (provided). There are two lugs on the snap-on back that accommodate a velcro strap (also provided) which ties down the charger in addition to the snap-on back that is latched to the charger. A well thought out system to ensure that the charger cannot shake loose when the vehicle is moving. In my case I have attached the charger to the wall above the front passenger tire well of my Silverado truck. That way, the charging leads can easily reach the battery although the power lead is too short to go anywhere near the front grill (Maybe 2-3 ft long). My GFI socket is on the side of my garage, about 45ft away from the engine compartment but it's easy to run a 50ft outside-rated cable (SJTW 12/3) to the charger power cable under the hood. With the temperatures around 31 to 42 degrees F right now and a new battery I am able to keep the battery fully charged in a truck that sometimes sits on an outside concrete pad for 2-3 weeks at a time. I am very pleased with this product. It gives me piece of mind that I will always be able to crank my engine whatever the weather. It will also help me to prolong the battery life. I now own two NOCO chargers, both are able to condition a battery as well as charge it. My other NOCO charger is a NOCO GENIUS 10A waterproof marine charger which can be used for several different battery types and does a great job for my lawn tractor and 12v shed battery for LED lights. It can handle lithium batteries also which works for my kayak. My neighbors call me when they need help with charging because they now understand the problems caused by sulphates which NOCO battery chargers can deal with. NOCO make great products. I have no hesitation recommending them. (NOTE: I gave this 5 stars but only four lit up. The first one stayed empty). Read more

I've had this installed on my truck for right at a year now, and I have to say if you don't drive for extended periods of time GET THIS. Not once have I ever had an issue with this maintainer and it's half the price of anything close to the reliability and quality of this one. It's small enough that you can tuck it away completely out of sight and just have the plug accessible when you need it. I always hated using the clamp styles just for the fact that they might pop off if you don't get it on the post good enough, this is as easy as plugging in an outlet and works flawlessly. I'm only reviewing this now, because I'm about to buy another for another one of my trucks for the winter. Read more

I got this partially because I need a SLA charger and maintainer but a little bit also because of it restoration function. Some newer charger/maintainers like this also have the ability to apply a pulse that can help break up crystalization inside the battery. While this will not bring an old or damaged battery back to a new state, it does help with things like when a battery is allowed to discharge too far at least once but not significantly damaged otherwise. I didn't know for sure if it would help with my own car's battery, but decided to try it anyway. It actually did indeed seem to help. Before using this it would only last a few minutes with the radio powered on after the car was shut off before it would shut it down due to low voltage. Now it lasts about 30 minutes. This also translates to holding up much better when sitting over time. This is not magic, so it is very limited in what it is able to do (more serious damage may not even be repairable short of basically rebuilding the battery,) but in cases of one of the more common minor causes of SLA battery capacity loss it does indeed help. As for the actual charging and maintenance functions, these seem to work quite well. It's only a 2A maximum charge rate (it lowers twice in later stages of the charge process) so not well suited to large batteries such as those of a car except as a maintainer (which needs very little actual current,) but will do in a pinch if you have the time (I believe it listed 60 hours as the time required to 100% fully charge a car battery -- although it will likely crank in much less time than that.) You will probably want one of the larger ones for those. However, it does have the advantage of being able to safely work on practically any SLA battery you can reasonably throw at it -- provided you can spare the time for a larger battery. I am also using this to maintain (and hopefully restore) a much smaller battery and so far it seems to be working just fine. I'm not clear on the difference between this one and the 2D model. This one also comes with a mount if you would like to more permanently mount it (such as inside your car.) Interestingly they seem to have made the alligator clips that come with it have screw-mounted rings that can be removed for permanent installation at the terminal screws. This way you don't need a separate set of connectors for each as the 2D model did. So this is an option for those who need to do this. Read more

This is my 2nd purchase. Bought this for my son's new car. Really like it is an onboard charger and the brand is high quality and works great! Good value as well & simple to install. Read more